drm/i915: Use unsigned long for obj->user_pin_count
authorDaniel Vetter <daniel.vetter@ffwll.ch>
Thu, 10 Oct 2013 12:46:37 +0000 (14:46 +0200)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Wed, 16 Oct 2013 20:06:39 +0000 (22:06 +0200)
commitaa5f8021811aede2e40aa715c55fbd87d945a443
treea491c020dab146964f8ec6da84a47367b4dff7c1
parent80075d492f8773209e26d11d6bb13ba624ef95a4
drm/i915: Use unsigned long for obj->user_pin_count

At least on linux sizeof(long) == sizeof(void*) and the thinking
is that you can grab about as many references as there's memory.

Doesn't really matter, just a bit of OCD since the fixed size data
type in a pure in-kernel datastructure look off.

v2: Ville asked for an overflow check since no one prevents userspace
from incrementing the pin count forever.

v3: s/INT/LONG/, noticed by Chris.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/i915_drv.h
drivers/gpu/drm/i915/i915_gem.c